Illumio

Illumio is the industry-leading Zero Trust Segmentation (ZTS) company, designed to prevent the lateral movement of threats within a network. In 2026, Illumio has solidified its market position by integrating advanced AI to automate the complex process of policy creation and traffic labeling. Its architecture is fundamentally decoupled from the network layer, allowing security teams to implement segmentation without touching the underlying switches or routers. The platform operates through a centralized Policy Compute Engine (PCE) that calculates and pushes firewall rules to Virtual Enforcement Nodes (VENs) installed on workloads or through agentless cloud integrations. This approach provides a consistent security fabric across multi-cloud, hybrid environments, and legacy data centers. By correlating traffic patterns with vulnerability data, Illumio allows organizations to prioritize patching and isolate high-risk assets dynamically. Its 2026 roadmap focuses on autonomous security operations, where the system identifies anomalies and applies containment policies in milliseconds, effectively neutralizing ransomware before it can propagate.